小学四年级口算题,小数点的,第一名就采纳

1.87+63-21
2.54-45+65
3.24-21+54
4.98-95+54
5.54+88-87
6.54+52-84
7.20+84-87
8.21+77-45
9.54+82-12
10.62+59-45
11.51-54+51
12.87-78+99
13.24+54-51
14.54+84-215
15.87-51+55
16.87-72+91
17.85-58+46
18.62+12-85
19.25+58-54
20.61-54+81
21.52-21+15
22.54-21+78
23.81+62-58
24.56+84+84
25.49+89-11
26.96-27+15
27.95-25+48
28.94-84+86
29.65-45+25
30.54-96+85
31.88+21-37
32.69+97-27
33.14+48-58
34.25+95-46
35.36+62-57
36.53+31-39
37.43+94-48
38.76+25-28
39.89+60-16
40.94+84-38
41.65+50-19
42.52+35-27
43.11+15-28
44.24+64-26
45.47+31-25
46.58+97-34
47.84+46-25
48.95+95-20
49.61+75-13
50.12+65-12
51.73+45-32
52.86+25-21
53.99+85-12
54.38+16-54
55.15+34-54
56.24+94-28